Find out about peritoneal dialysis, what life is like while on it and the prognosis for those suffering from this condition. Learn how long a patient can be on peritoneal dialysis while awaiting kidney transplant.
Erasers are made from either natural or synthetic rubber. Natural rubber is produced from latex that is collected from rubber trees. Water is removed from the latex, increasing the rubber content to 60%. Acid is added to the liquid concentrate in order to produce solid sheets of dry rubber.
A crayon (or wax pastel) is a stick of colored wax, charcoal, chalk or other material used for writing or drawing. A crayon made of pigment with a dry binder is a pastel; when made of oiled chalk it is called an oil pastel. A grease pencil or china marker (UK chinagraph pencil) is made of colored hardened grease. There are also watercolor crayons, sometimes called water-soluble crayons.